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<div class="title">nrf51/Board/nrf6310/pin_change_int_example/main.c</div>  </div>
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<a href="nrf6310_2pin__change__int__example_2main_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* Copyright (c) 2009 Nordic Semiconductor. All Rights Reserved.</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * The information contained herein is confidential property of Nordic</span>
<a name="l00004"></a>00004 <span class="comment"> * Semiconductor ASA.Terms and conditions of usage are described in detail</span>
<a name="l00005"></a>00005 <span class="comment"> * in NORDIC SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensees are granted free, non-transferable use of the information. NO</span>
<a name="l00008"></a>00008 <span class="comment"> * WARRANTY of ANY KIND is provided. This heading must NOT be removed from</span>
<a name="l00009"></a>00009 <span class="comment"> * the file.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> */</span>
<a name="l00012"></a>00012 
<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;stdbool.h&gt;</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include &quot;nrf.h&quot;</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &quot;nrf_gpio.h&quot;</span>
<a name="l00030"></a>00030 
<a name="l00035"></a><a class="code" href="group__pin__change__int__example.html#ga599b41df634258a4002f46cfd8ce40bd">00035</a> <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="group__pin__change__int__example.html#ga599b41df634258a4002f46cfd8ce40bd">gpio_init</a>(<span class="keywordtype">void</span>)
<a name="l00036"></a>00036 {
<a name="l00037"></a>00037 
<a name="l00038"></a>00038   <a class="code" href="group__nrf__gpio.html#ga4e63d442ebd572126be3e030b3df4dc6" title="Configure given GPIO pin number as input with given initial value set, hiding inner details...">nrf_gpio_cfg_input</a>(0, <a class="code" href="group__nrf__gpio.html#gga07e0c8c0b30499cf0a7b79dbe62d3fcca13ffcb94eb78be866c66b5f5b516af65" title="Pin pullup resistor disabled.">NRF_GPIO_PIN_NOPULL</a>);
<a name="l00039"></a>00039   <a class="code" href="group__nrf__gpio.html#ga0271806dc37bffea02d199474d526a35" title="Configure given GPIO pin number as output with given initial value set, hiding inner details...">nrf_gpio_cfg_output</a>(8);
<a name="l00040"></a>00040 
<a name="l00041"></a>00041   <a class="code" href="group__nrf__gpio.html#ga7fefa8a71e25eeb57b5b4230b0dd0484" title="Write value to GPIO pin.">nrf_gpio_pin_write</a>(8, 0);
<a name="l00042"></a>00042 
<a name="l00043"></a>00043   <span class="comment">// Power on the GPIOTE peripheral</span>
<a name="l00044"></a>00044   NRF_POWER-&gt;PERPOWER |= (POWER_PERPOWER_GPIOTE_Power &lt;&lt; POWER_PERPOWER_GPIOTE_Pos);
<a name="l00045"></a>00045 
<a name="l00046"></a>00046   <span class="comment">// Wait for the power up</span>
<a name="l00047"></a>00047   <span class="keywordflow">while</span> ((NRF_POWER-&gt;PERRDY &amp; POWER_PERRDY_GPIOTE_Msk) != (POWER_PERRDY_GPIOTE_Ready &lt;&lt; POWER_PERRDY_GPIOTE_Pos))
<a name="l00048"></a>00048   {
<a name="l00049"></a>00049   }
<a name="l00050"></a>00050 
<a name="l00051"></a>00051   <span class="comment">// Enable interrupt:</span>
<a name="l00052"></a>00052   NVIC_EnableIRQ(GPIOTE_IRQn);
<a name="l00053"></a>00053   NRF_GPIOTE-&gt;CONFIG[0] =  (GPIOTE_CONFIG_POLARITY_Toggle &lt;&lt; GPIOTE_CONFIG_POLARITY_Pos)
<a name="l00054"></a>00054               | (0 &lt;&lt; GPIOTE_CONFIG_PSEL_Pos)
<a name="l00055"></a>00055               | (GPIOTE_CONFIG_MODE_Event &lt;&lt; GPIOTE_CONFIG_MODE_Pos);
<a name="l00056"></a>00056   NRF_GPIOTE-&gt;INTENSET = GPIOTE_INTENSET_IN0_Set &lt;&lt; GPIOTE_INTENSET_IN0_Pos;
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 
<a name="l00062"></a><a class="code" href="group__pin__change__int__example.html#ga26b108e2296d5514a2391960b4231d71">00062</a> <span class="keywordtype">void</span> <a class="code" href="group__adns2080__example.html#ga26b108e2296d5514a2391960b4231d71">GPIOTE_IRQHandler</a>(<span class="keywordtype">void</span>)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064   <span class="comment">// Event causing the interrupt must be cleared</span>
<a name="l00065"></a>00065   <span class="keywordflow">if</span> ((NRF_GPIOTE-&gt;EVENTS_IN[0] == 1) &amp;&amp; (NRF_GPIOTE-&gt;INTENSET &amp; GPIOTE_INTENSET_IN0_Msk))
<a name="l00066"></a>00066   {
<a name="l00067"></a>00067     NRF_GPIOTE-&gt;EVENTS_IN[0] = 0;
<a name="l00068"></a>00068   }
<a name="l00069"></a>00069   <a class="code" href="group__nrf__gpio.html#ga5c8310a3b7a81cc4a267844c81769a40" title="Toggle GPIO pin.">nrf_gpio_pin_toggle</a>(8);
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 
<a name="l00076"></a><a class="code" href="group__pin__change__int__example.html#ga840291bc02cba5474a4cb46a9b9566fe">00076</a> <span class="keywordtype">int</span> <a class="code" href="group__gpio__example.html#ga840291bc02cba5474a4cb46a9b9566fe">main</a>(<span class="keywordtype">void</span>)
<a name="l00077"></a>00077 {
<a name="l00078"></a>00078   <a class="code" href="group__pin__change__int__example.html#ga599b41df634258a4002f46cfd8ce40bd">gpio_init</a>();
<a name="l00079"></a>00079   <span class="keywordflow">while</span> (<span class="keyword">true</span>)
<a name="l00080"></a>00080   {
<a name="l00081"></a>00081   }
<a name="l00082"></a>00082 }
<a name="l00083"></a>00083 
</pre></div></div>
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